US 11,841,577 B2
Backlight module and display device
Zhiyong Wang, Beijing (CN); Yong Song, Beijing (CN); and Lingyun Shi, Beijing (CN)
Assigned to BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/788,135
Filed by Beijing BOE Optoelectronics Technology Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Aug. 4, 2021, PCT No. PCT/CN2021/110590
§ 371(c)(1), (2) Date Jun. 22, 2022,
PCT Pub. No. WO2022/068380, PCT Pub. Date Apr. 7, 2022.
Claims priority of application No. 202011069930.4 (CN), filed on Sep. 30, 2020.
Prior Publication US 2023/0031334 A1, Feb. 2, 2023
Int. Cl. G02F 1/00 (2006.01); G02F 1/13357 (2006.01); G02F 1/1335 (2006.01)
CPC G02F 1/133603 (2013.01) [G02F 1/133612 (2021.01)] 12 Claims
OG exemplary drawing
 
1. A backlight module, comprising:
a base substrate;
a plurality of light zones arranged on the base substrate, wherein the plurality of light zones are arranged in an array on the base substrate, each light zone comprises a plurality of mini light emitting diodes, a plurality of lead wires in the light zone, an external anode and an external cathode, and the plurality of lead wires in the light zone are configured to electrically connect the plurality of mini light emitting diodes in series;
a plurality of anode wires respectively electrically connected to external anodes of a plurality of rows of light zones; and
a plurality of cathode wires respectively electrically connected to external cathodes of a plurality of rows of light zones,
wherein in at least some of the plurality of cathode wires, one same cathode wire is electrically connected to the external cathodes of the light zones located in different rows to provide, by means of time-division multiplexing, cathode signals to the light zones located in different rows; and
same-wire light zones comprise a plurality of light zones electrically connected to one same cathode wire, same-type anode wires comprise a plurality of anode wires to which the same-wire light zones are connected, and orthographic projections of the same-type anode wires on the base substrate do not overlap with an orthographic projection of one same lead wire in any of the plurality of light zones on the base substrate.